/* K-Vault visual refresh — mineral vault (slate teal + amber)
   Avoids default purple / cream-terracotta AI skins. */

@import url("https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=Manrope:wght@400;500;600;700&display=swap");

:root {
  --primary-color: #0f766e;
  --primary-light: #2dd4bf;
  --primary-dark: #115e59;
  --accent-color: #f59e0b;
  --accent-soft: #fde68a;
  --success-color: #16a34a;
  --warning-color: #d97706;
  --danger-color: #e11d48;
  --info-color: #64748b;
  --bg-gradient:
    radial-gradient(1200px 600px at 8% -10%, rgba(45, 212, 191, 0.28), transparent 55%),
    radial-gradient(900px 500px at 92% 0%, rgba(245, 158, 11, 0.18), transparent 50%),
    linear-gradient(165deg, #f4f7f6 0%, #e8eef0 42%, #dfe9e8 100%);
  --card-bg: rgba(255, 255, 255, 0.78);
  --shadow: 0 10px 30px rgba(15, 61, 58, 0.08);
  --shadow-hover: 0 16px 36px rgba(15, 118, 110, 0.16);
  --text-primary: #132422;
  --text-secondary: #3d524f;
  --text-muted: #6b7f7c;
  --surface-1: #ffffff;
  --surface-2: rgba(255, 255, 255, 0.72);
  --surface-3: #eef5f4;
  --surface-border: rgba(15, 118, 110, 0.12);
  --input-border: #d5e3e1;
  --warning-text-color: #9a6700;
  --border-radius: 18px;
  --transition: all 0.22s cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Syne", "Manrope", sans-serif;
  --font-body: "Manrope", "Noto Sans SC", system-ui, sans-serif;
  --mesh-spot: rgba(15, 118, 110, 0.08);
}

html[data-theme="dark"] {
  --primary-color: #2dd4bf;
  --primary-light: #5eead4;
  --primary-dark: #14b8a6;
  --accent-color: #fbbf24;
  --accent-soft: #78350f;
  --bg-gradient:
    radial-gradient(1000px 520px at 10% -8%, rgba(45, 212, 191, 0.16), transparent 55%),
    radial-gradient(800px 480px at 90% 0%, rgba(251, 191, 36, 0.1), transparent 50%),
    linear-gradient(160deg, #0b1413 0%, #0f1c1a 50%, #081110 100%);
  --card-bg: rgba(14, 28, 26, 0.88);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
  --text-primary: #e7f5f2;
  --text-secondary: #b7ccc7;
  --text-muted: #7f9792;
  --surface-1: #12201e;
  --surface-2: rgba(18, 32, 30, 0.85);
  --surface-3: #1a2c29;
  --surface-border: rgba(45, 212, 191, 0.22);
  --input-border: rgba(45, 212, 191, 0.28);
  --warning-text-color: #fbbf24;
  --mesh-spot: rgba(45, 212, 191, 0.08);
}

body {
  font-family: var(--font-body) !important;
  background: var(--bg-gradient) !important;
  background-attachment: fixed !important;
  color: var(--text-primary);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(15, 118, 110, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 118, 110, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  opacity: 0.7;
}

#app {
  position: relative;
  z-index: 1;
}

/* Brand */
.header-title {
  font-family: var(--font-display) !important;
  letter-spacing: -0.03em;
  font-weight: 800 !important;
  gap: 14px !important;
}

.header-title span {
  background: linear-gradient(120deg, var(--text-primary) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.header-title .brand-logo {
  width: 36px !important;
  height: 36px !important;
  border-radius: 12px !important;
  box-shadow: 0 6px 16px rgba(15, 118, 110, 0.25) !important;
}

.brand-tagline {
  display: none;
  margin: -8px 0 18px;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

@media (min-width: 900px) {
  .brand-tagline {
    display: block;
    animation: vaultFadeUp 0.55s ease both;
  }
}

@keyframes vaultFadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes vaultPulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(15, 118, 110, 0.25);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(15, 118, 110, 0);
  }
}

@keyframes vaultShimmer {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 100% 50%;
  }
}

.header {
  border: 1px solid var(--surface-border) !important;
  background: color-mix(in srgb, var(--card-bg) 92%, transparent) !important;
  box-shadow: var(--shadow) !important;
  animation: vaultFadeUp 0.45s ease both;
}

.nav-links a:hover {
  background: rgba(15, 118, 110, 0.1) !important;
  color: var(--primary-color) !important;
}

.nav-links .theme-toggle-btn,
.header-theme-toggle {
  border-color: rgba(15, 118, 110, 0.28) !important;
  background: linear-gradient(
    135deg,
    rgba(15, 118, 110, 0.12),
    rgba(245, 158, 11, 0.12)
  ) !important;
}

.card {
  border: 1px solid var(--surface-border) !important;
  box-shadow: var(--shadow) !important;
  background: var(--card-bg) !important;
  animation: vaultFadeUp 0.55s ease both;
}

.upload-section {
  animation-delay: 0.05s;
}

.results-section,
.history-section {
  animation-delay: 0.12s;
}

.card-title {
  font-family: var(--font-display) !important;
  letter-spacing: -0.02em;
}

.card-title i {
  color: var(--primary-color) !important;
}

/* Upload zone */
.upload-zone {
  border: 2px dashed rgba(15, 118, 110, 0.35) !important;
  background:
    linear-gradient(145deg, rgba(45, 212, 191, 0.08), rgba(245, 158, 11, 0.06)),
    var(--surface-1) !important;
  transition: var(--transition) !important;
  position: relative;
  overflow: hidden;
}

.upload-zone::before {
  background: linear-gradient(
    135deg,
    rgba(15, 118, 110, 0.14),
    rgba(245, 158, 11, 0.1)
  ) !important;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--primary-color) !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover) !important;
}

.upload-zone.dragover {
  animation: vaultPulse 1.4s ease infinite;
}

.upload-icon {
  color: var(--primary-color) !important;
  filter: drop-shadow(0 8px 16px rgba(15, 118, 110, 0.25));
  transition: transform 0.3s ease;
}

.upload-zone:hover .upload-icon {
  transform: translateY(-4px) scale(1.05);
}

.upload-text {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Storage / buttons */
.storage-btn:hover:not(.disabled) {
  border-color: var(--primary-light) !important;
  background: rgba(15, 118, 110, 0.06) !important;
}

.storage-btn.active {
  border-color: var(--primary-color) !important;
  background: linear-gradient(
    135deg,
    rgba(15, 118, 110, 0.12),
    rgba(45, 212, 191, 0.16)
  ) !important;
  color: var(--primary-color) !important;
}

.storage-btn.active i {
  color: var(--primary-color) !important;
}

.method-btn.active,
.format-tab.active {
  background: var(--primary-color) !important;
  color: #fff !important;
  border-color: var(--primary-color) !important;
}

/* Results + short link */
.result-item {
  border: 1px solid var(--surface-border) !important;
  transition: var(--transition) !important;
}

.result-item:hover {
  border-color: rgba(15, 118, 110, 0.35) !important;
  box-shadow: var(--shadow) !important;
  transform: translateY(-1px);
}

.result-item.selected {
  background: rgba(15, 118, 110, 0.08) !important;
  border-color: rgba(15, 118, 110, 0.35) !important;
}

.result-item-link {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.82em !important;
}

.short-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #065f46;
  background: linear-gradient(135deg, #ccfbf1, #a7f3d0);
  border: 1px solid rgba(15, 118, 110, 0.2);
  vertical-align: middle;
}

html[data-theme="dark"] .short-badge {
  color: #99f6e4;
  background: rgba(15, 118, 110, 0.35);
  border-color: rgba(45, 212, 191, 0.35);
}

.toolbar-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid var(--surface-border);
  background: var(--surface-3);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

.toolbar-chip:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.toolbar-chip input {
  accent-color: var(--primary-color);
  width: 15px;
  height: 15px;
}

.action-btn {
  border-radius: 10px !important;
  transition: var(--transition) !important;
}

.action-btn:hover {
  background: rgba(15, 118, 110, 0.12) !important;
  color: var(--primary-color) !important;
}

.guest-notice {
  background: linear-gradient(
    135deg,
    rgba(245, 158, 11, 0.12),
    rgba(45, 212, 191, 0.1)
  ) !important;
  border-color: rgba(217, 119, 6, 0.35) !important;
}

/* Element UI primary tint */
.el-button--primary {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
}

.el-button--primary:hover,
.el-button--primary:focus {
  background-color: var(--primary-dark) !important;
  border-color: var(--primary-dark) !important;
}

.el-checkbox__input.is-checked .el-checkbox__inner,
.el-checkbox__input.is-indeterminate .el-checkbox__inner {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
}

.toast.success,
.el-message--success {
  border-color: rgba(15, 118, 110, 0.35) !important;
}

/* Prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .card,
  .header,
  .brand-tagline,
  .upload-zone.dragover,
  .upload-zone:hover .upload-icon {
    animation: none !important;
    transition: none !important;
    transform: none !important;
  }
}